Chelsea boss Jose Mourinho says striker Diego Costa could be in the squad to face Arsenal next week.
The Spain international continues his recovery from a hamstring injury and is expected to play at least four games for the Blues before the end of the season.
"He is progressing very well," Mourinho said on Friday.
"I think he has a chance for next weekend.
"As I have said our target is for Diego to play the last four matches, and Arsenal is the sixth match before the end, so if he doesn't play against Arsenal or Leicester it's not a problem because our focus was on four, but things are going so well that we think he has a chance to play next weekend."
Meanwhile, the Portuguese expects a tough game on Saturday against Manchester United.
"Their squad is amazing, in numbers and players, and in experience and solutions," he said.
"Every week I have in my office not the team I am going to play against, but I have on a big screen the squad and all the options, and this week when I arrived in the room for the first time in the week I realised what they have, and what they have is amazing.
"To play against Man United is to play against one of the biggest clubs in the world.
"It's to play against one of the best teams in the Premier League, and I think this is what everybody wants. It is a special fixture. It's a big match.
"This week I was not worried about motivating players or demanding players to be focused on the game and the opponent because there is no need. It's an easy job."